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- @with faire attent GEORGE FREDERIC ROSKOPEQOE OIAUX DE FONDS, SWITZERLAND, ASSIG'NOR TOIIIM SELF AND JULES D. HUGUENIN VUILLEMIR-OE NEW YORK CITY.

I Leners Paten- No. 75,463, and Marsh 1 0, 186s.

.IMPROVEMENT lIN cIIANeEAsLE Es@AIDEIIEITT POE WATCHES.

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TO lALL WHOM IT'MAY CONCERN: l

Be it known that I', GEORGE FnEDER'Ic Rosxors, 'of Chaux de Fonds, Switzerland, have inventeda new and useful Improvement in Watches; andI do hereby declare that the `following is a full, clear, and `exact description. thereof, whichvwill enable others skilled in the art to make and use the same, reference being had to the accompanying drawings forming'part of this specification. y

This 'invention relates to a new 'and useful" improvement inA thel construction of watches, and 'consists in having that portion of lthe mechanism of a watch which iskno'wnas the"escapementff'itted or attached to a Piate or frame separate from -.the frame in which the ,train or'other portion of tho movement is fitted; the plate or frame,to' which the escapement is iitted,-being attached to the frameof'the train in such a manner 'that it may be readily detached when necessary, and any of the known escapements, on a similar detachable plate or frame, iiitted or applied -to the other portion of the movement. y

The invention further consists in constructing the-detachable plate .in such a manner, or arranging the several parts comprising the escapement on said plate insuch a way. that the 'scape-wheel may be readily adjusted in 'a proper relative positionwith the pallets or other part or parts, which work in conta-ct with the teeth of,

the :scape-wheel, the detachable plate: being secured to or-in the frame which containsth verein,V 0r part of.

the fetch-movement, in sucha manner that it may 'be adjusted so that the pinion on thc scape-wheel arbor.

may always be adjusted properly in gear with the wheel ofthe train in which it is-desi'gned to work.

The following description refers to a watch provided with what is generally known as the detached-lever escapement," but the invention, as previously alluded to, is applicable to watches provided with anyof' the known cscapemen'ts, and any one kind of themfmay be detached land removed from'a watch, and another kind applied at will,l without' -any'diiiiculty or trouble whatever; and as escapements vary very materially in'price, according to finish, material employed, and superior workmanship, and comprise the most important part of a watch-mvement, a personprovided with a watch of my invention, having a cheap escapem'ent. or a defective one, can, at any time, Vhave a'more perfect and expensive one applied at' a comparatively small c'st. In the accompanyingsheet of drawingsf i I l Figure 1 is a detached view ci the plate on which the escspelm'ent is fitted, which,`in this instan-ce, is the detached lever." l

Figure 2a view of the same applied to a train or 'other portion of a watch-movement, all being enclosed within a watch-case. K

Figure 3, a detached vie'w of the escapement-plate, with the escapement removed.

Similar letters of reference indicate corresponding parts.

A represents a back plate, between which anda front plate, the portion ofthe movement of a watch commonly termed the train is secured. l This portion of the movement may be of ordinary construction, and therefore does not 'require a special description'. B represents s. plate or frame, (a dat plate will probablybe most generally used,) on 'whichl the escapement is placed, and properly fitted and secured. The drawings, figs. 1 and 2, show the -ordinary detached-lever esoapement, a being the balance-wheel; d, tl1e scape-wheel; e, the lever, armed withpallets, as usual. This escapement being in common use and well known, does'not requirel a special description. The cscapement-plate B is made of. such a size and form that it maybe fitted to the back plate A, or to any parts connected therewith, in such n. manner that the pinion on the nrborfof the scapei wheel may be made to gear in't'o the proper wheel, g, of the train,A (see g. 2.) The plate B may be secured to plate A, or parts connected therewith, by screws h 7L, and it will be seen that by removing these screws the plate B, and the whole escapement `which is attached thereto, may be removed from the watch, and another applied; hence, in case of an escapement becoming worn by use, or rendered defective from any cause, it may be detached, arida new one applied, of the same kind as the. original, orof any other kind. The plate B'has a slot, z`, made in it, which extends from its outer edge inward, between the arbor] of the lever, and the arbor f of the scapcwheel, and Itis a screw, which passes horizontally into the'fplte B', and crosses the slot By turning this screw, the parts of the plate at each side of the slotl may bvf/ brought' nearer together or further apart, as may be required, and by this means the pallets of the lever e may be madato enga-ge with the teeth ofthe scapewheeh es required. The regulotinglof the lever and eeapenvhe'el relutiyely with each other is an extremely nice operation, for the proper 'running ofthe watch depends upon it, und my improvement a'lmits voi that being done withthe greatest facilityiand noem-acyl With the ordinary tired escnpement it is attended with considerable trouble ,and expense, and if the 'parts are no t properly disposed nt first, or in theputtiing together of the escnpement, correction afterward is rather e. dubious-mutter. d 1

In ease this adjustment of the 'scope-Wheel and lever should interfere tritlrthe proper gearing of the pinion, ou 'the arbor of the scape-wheel, with the wheel g of the train, the plate B muet be adjusted to; remedy'the diihculty, and this may be readily done byliaving the holes of the sereivs It rather oblong, to admit of a. l'at'erol adjustment of said plate. I I

Having thus described my invention, what I claim ns new, and desire to secure by Letters Patent, is

1. Placing or attaching the escapement of a witch to a.` separnte'or independent plate or frame, applied or fitted to the plantes or franse which contain the tiain,"vor other portion of the watchfmovement, in sncha mhnner tho-t the escapement attached maybe removednt will, andnnother escapemcnt substituted therefor, substantially as' shown and described. v A

2. The slot i, in the escapem-ent-plnte B, and the screw k inserted therein, or n equivalent means, foi

Athe purpose ofvadjusting the scape-wheel and the lever-pallets' in a proper relative position with each other,

substantially as'aet forth. l. A VThe above specification of my invention signed by me, this 22d day of October, 1867.

GEORGE FREDERIC R'OSKOPF.

Witnesses:-

L. RENAUD, DEns. RESIN. 

